Sheet feeding



H. K. KING SHEET FEEDING Dec. 27, 1927.

ori inal Filed Nov.

fndenio -w Patented Dec. 27, 1927.

UNITED STATES tensors Parent orrics.

HOWARD K. KING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CHAMBERS BROTHERS COMPANY, A CORPORATION OF PENNSYLVANIA.

SHEET FEEDING.

Original application filed November 4, 1925, Serial No. 66,763.

Divided and this application filed June 9,

1927. Serial No. 197,535. 1 i

The invention relates to improvements in sheet feeding machines. The object is to provide improved means for separating and delivering single sheets from apile of sheets. The improvements relate to that type of sheet feeding machines commonly known as the continuous feed type.

The improvements are especially applicable to a machine for feeding sheets to a printing press, although certain of the improvements are equally applicable to feeding sheets, to folders, or to similar devices. This invention is especially applicable to the tail-clamp and drag for controlling the pile of sheets and is a division. of my application filed Nov. 4, 1925, having Serial No. 66,?63 for improvements in sheet feeding machines.

Referring to the drawings, which illustrate merely by way of example, a suitable embodiment of my invention Fig. 1 is a righthand side elevation of a sheet feeding machine equipped with my improved tail-clamp and drag.

Fig. 2 is a side elevation on an enlarged scale of said tail clamp and drag.

Fig. 3 is a rear elevation of same.

Similar numerals refer to similar parts throughout the several views.

The tail-clamp in accordance with the present invention is similar in construction, adjustment and control to that shown in Figs. 1, 9. and 10 of my Patent No. 1,412,872 of April 18, 1922. The drag however, in accordance with the present invention is incorporated with the tail-clamp structure.

The tail-clamp structure is adjustably secured to the cross bar 4. Its position of adjustment is maintained by the set screw 16 provided with the operating wheel 17.

The clamp plate 5 is shown as pivotally supported at 6 and has an upwardly curved end 7 projecting beyond the pivot 6.

Secured to the clamp-plate 5 is the bracket 18 carrying post 19 which is connected to one end of spring 20, the other end of spring 20 being connected to the post 21. Two springs are usually employed, one on each side of bracket 18, in order to balance the strains. Said spring or springs, operating updn bracket 18, cause the exertion of the required pressure of the free end of clampplate 5 upon the sheet.

The drag comprises the member or bifurcated formation 8, having the upwardly extending ends or cars 9, to which is secured the cross-pin 10 which rests upon the curved end '7 of the clamp plate 5, which extends between said ends 9. The underside of the middle part 11 of formation 8 is solid'and curved and adapted to rest upon the bank of sheets in front of the sheet engaging end of the clamp plate 5.

The forward end of formation 8 is raised and provided with the flange 12, and post 13 for holding the weight 14:, one or more of which may be used as required.

On the side of the drag formation 8 is mounted the nozzle 15, the function of which is similar to that shown in Figs. 18 and 19 of my former Patent No. 1,412,872.

It will thus be seen that the drag and nozzle are incorporated in the.tail-clamp structure and partake of the same adjustable movement as that of the tail-clamp, and has the additional advantage of bringing its dragging influence in the same path of travel on the sheet as that on the tail-clamp.

What I claim is 1. In combination with a sheet feeding machine, a combinedtail-clamp and drag. the clamp being adjustably mounted and spring controlled, the drag comprising a gravity actuated formation having pivotal connection with the clamping structure and adjustable therewith.

2. In combination with a sheet feeding machine, a combined tail-clamp and drag. the clamp comprising a spring controlled clamping blade and adjustably mounted supporting means. the drag comprising a formation having port-ions flanking the blade and pivotally supported relative thereto.

3. In combination with a sheet feeding machine, a combined tail-clamp and drag, the clamp being adjustably mounted and spring controlled, the drag comprising a gravity actuated formation having pivotal connection with the clamping structure and adapted to engage the sheet in the same path of travel as that of the clamp.

1. In combination with a sheet feeding machine, a combined tail-clamp-and drag, the clamp being adjustably mounted and spring controlled, the drag comprising a gravity actuated format-ion having pivotal connection with the clamping structure and adapted to engage the sheet in the same path of travel as that of the clamp, and an air blowing" nozzle carried by the drag and delivering to the bank of sheets between the lines of engagemeniitherewith by the clamp and the dra 5".In cornbina tien with :1 sheet feeding machine, a combined tail-clamp and drag, the clamp comprising a. spring ccmtrolled clamping blade and adj i1st2ibly m0unted suppqetingmemns, the drag comprising a formation having lugs flanking one end of the clamping blade and cavrying n eiippm'ting pin resting upon the said blade.

6. In combination with a sheet; feeding: machine, a combined tail-clamp drug and blowing nozzle having a common support and adjustment and operating: upon the bank of sheets in approximately the 5211110 path of travel.

HOWARD K. KING. 

